Yea, my nitrite spiked very high to where it was unreadable by the test strips I use, I have been cycling for 3 weeks now. I added more ammonia and I'm going to test again in the morning, but I have run out of ammonia test strips and my LFS is closed... I'm going to check for nitrite in the morning and if it has disappeared I will do one more small dose of ammonia tomorrow and buy my first few fish on Monday.